<template>
  <div id="app">
    <div class="app-container">
      <!-- 顶部 Header 区域 -->
      <mt-header fixed title="网上购物商城">
        <span slot="left" @click="goBack" v-show="flag">
          <mt-button icon="back">返回</mt-button>
        </span>
      </mt-header>
      <!-- 中间的 路由 router-view 区域 -->
      <transition>
        <router-view></router-view>
      </transition>
      <!-- 底部 Tabbar 区域 -->
      <nav class="mui-bar mui-bar-tab">
        <router-link class="mui-tab-item-llb" to="/home">
          <span class="mui-icon mui-icon-home"></span>
          <span class="mui-tab-label">首页</span>
        </router-link>
        <router-link class="mui-tab-item-llb" to="/image">
          <span class="mui-icon mui-icon-image"></span>
          <span class="mui-tab-label">图片分享</span>
        </router-link>
        <router-link class="mui-tab-item-llb" to="/shopcar">
          <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
            <span class="mui-badge" id="badge">{{ $store.getters.getAllCount }}</span>
          </span>
          <span class="mui-tab-label">购物车</span>
        </router-link>
        <router-link class="mui-tab-item-llb" to="/newslist">
          <span class="mui-icon mui-icon-weibo"></span>
          <span class="mui-tab-label">新闻资讯</span>
        </router-link>
      </nav>
    </div>
  </div>
</template>

<script>
export default {
  name: 'App',
  data() {
    return {
      flag: false
    };
  },
  created() {
    this.flag = this.$route.path === "/home" ? false : true;
  },
  methods: {
    goBack() {
      // 点击后退
      this.$router.go(-1);
    }
  }
}
</script>

<style scoped>
  .mint-header {
    z-index: 99;
  }
  .app-container {
    padding-top: 40px;
    padding-bottom: 50px;
    overflow-x: hidden;
  }

  .v-enter {
    opacity: 0;
    transform: translateX(100%);
  }

  .v-leave-to {
    opacity: 0;
    transform: translateX(-100%);
    position: absolute;
  }

  .v-enter-active,
  .v-leave-active {
    transition: all 0.5s ease;
  }

  /*  该类名，解决 tabbar 点击无法切换的问题 */
  .mui-bar-tab .mui-tab-item-llb.mui-active {
    color: #007aff;
  }

  .mui-bar-tab .mui-tab-item-llb {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
  }

  .mui-bar-tab .mui-tab-item-llb .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
  }

  .mui-bar-tab .mui-tab-item-llb .mui-icon ~ .mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
  }
</style>
